US4247926A - Watch movement - Google Patents

Watch movement Download PDF

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Publication number
US4247926A
US4247926A US06/052,461 US5246179A US4247926A US 4247926 A US4247926 A US 4247926A US 5246179 A US5246179 A US 5246179A US 4247926 A US4247926 A US 4247926A
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US
United States
Prior art keywords
holding plate
tongues
bottom plate
dial
holes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/052,461
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English (en)
Inventor
Peter Bachmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETAUCHES BETTLOCH SA
Original Assignee
ETAUCHES BETTLOCH SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ETAUCHES BETTLOCH SA filed Critical ETAUCHES BETTLOCH SA
Application granted granted Critical
Publication of US4247926A publication Critical patent/US4247926A/en
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Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped

Definitions

  • This invention relates to watch movements of the type having a frame comprising a holding plate disposed between the bottom plate and the dial.
  • both the elements of the calendar-driving mechanism and the date-ring, as well as the day-disk, if any, are generally known to be held in place by a holding plate forming part of the frame of the movement.
  • a holding plate forming part of the frame of the movement.
  • such holding plates have been secured to the bottom plate.
  • various arrangements have already been proposed, particularly a design in which the holding plate is blanked with one or more resilient arms.
  • An example of such an arrangement is that disclosed in Swiss Pat. No. 586,923, for example.
  • the holding plate is covered by the dial.
  • the latter extends up to the periphery of the bottom plate, to which it is secured by feet or pins. In certain cases, these feet or pins are engaged in holes made in a peripheral rim of the bottom plate surrounding the date-ring.
  • British Pat. No. 1,258,887 teaches an arrangement in which the holding plate and the dial cooperate in the sense that the holding plate has radial arms extending out to the periphery of the bottom plate between the date-ring and the dial so as to support the dial at the location of the fixing pins.
  • the holding plate itself is secured to the bottom plate by screws provided in it central portion.
  • a drawback of this known arrangement is that it requires special manufacturing operations to be performed either on the holding plate or on the date-ring in order to create the space necessary for the movements of the date-ring.
  • Still another object of the invention is to provide a watch movement in which the holding plate, instead of being secured to the bottom plate, may itself be held in place by the dial inasmuch as the assembly of the movement ends with the fitting of this display component.
  • the holding plate is made of a thin sheet of material and includes one or more positioning elements cooperating with the bottom plate for determining the position of the holding plate relative to the bottom plate and one or more raised support tongues cooperating with the dial for causing the dial to press the holding plate against the bottom plate.
  • FIG. 1 is a top plan view of a watch movement according to the invention.
  • FIG. 2 is a partial section taken on the line II--II of FIG. 1, on a larger scale.
  • a dial 2 made preferably of a plastic material, includes diametrically opposed notches 3 and is secured to a peripheral rim 4 of bottom plate 1 by means of two diametrically opposed conical-headed pins 5.
  • Plate 1 is machined with a central pipe 6 upon which a cannon-pinion 7 rotates.
  • a hour-wheel 8 is fitted on cannon-pinion 7. These two parts are indirectly driven by a minute-wheel (not shown) coupled to a rotary member of the movement. From hour-wheel 8, a driving mechanism (not shown) actuates step by step, at the rate of one step every 24 hours, a date-ring 9 which is accommodated in an annular recess in plate 1.
  • Annular recess 10 is situated just inside rim 4 and is bounded on its inner side by a zone 11, the upper surface 11a of which is plane and on a level with the upper face of date-ring 9.
  • the periphery of zone 11 is bounded by the inner side 12 of recess 10 which has the shape of a cylindrical surface extending arcuately over one or more portions of its periphery for guiding date-ring 9.
  • Cylindrical surface 12 is interrupted at the location where date-ring 9 is driven as well as at the location where a jumper-wire 13 cooperates with the inner toothing of date-ring 9.
  • Drilled into supporting surface 11a are two diametrically opposed holes 14 having axes parallel to the central axis of the movement.
  • Holding plate 15 is an extremely thin sheet of steel, produced by blanking, which is for the most part flat but includes two support tongues 16 and two positioning tongues 17.
  • Tongues 17 extend radially in diametrically opposed directions and are blanked in the bottoms of notches 18 made in the outer edge of holding plate 15.
  • the ends of tongues 17 are arcuately blanked, and they are bent in such a way that the distance between their two end points is equal to the distance between the two generatrices of holes 14 which are the farthest apart.
  • the rounding of the ends of tongues 17 is such that these two ends fit into holes 14 without play at the time of assembly.
  • the angle of tongues 17 with respect to the plane of holding plate 15 was 40°.
  • Tongues 16 are blanked radially in diametrically opposed directions at the edge of a circular central aperture 18a in holding plate 15. They are bent upward at an angle as may be seen in FIG. 2. When dial 2 is fitted in place, it rests against tongues 16 and thereby presses holding plate 15 against supporting surface 11a. The angle at which tongues 16 are bent may be 15°, for example. In the aforementiond reduction to practice, the ends of tongues 16 extended 0.38 mm. above the underside of holding plate 15.
  • holding plate 15 ensures the axial position of the elements of the calendar mechanism; and although this mechanism is a simple calendar mechanism in the embodiment illustrated in the drawing, the same holding-plate arrangement may also be utilized for ensuring the positioning of a day-date mechanism.
  • hour-wheel 8 will be held in place axially by a bent annular washer (not shown) disposed within aperture 18a and pressing against the underside of dial 2 and upon the upper face of hour-wheel 8 as in a conventional mechanism.
  • the inner edge of holding plate 15 might also serve to hold hour-wheel 8 in place.
  • tongues 16 are disposed along the same diameter as tongues 17 and notches 3 for fixing dial 2 in the embodiment illustrated, the relative positions of these various elements might be different. Furthermore, the number of points for securing dial 2, and the number of tongues 16 and 17, might be other than two. It has been found, however, that by rounding the ends of tongues 17 appropriately and selecting appropriate diameters for holes 14, the plane of holding plate 15 can be precisely positioned with two positioning tongues 17 and two corresponding holes 14. The area of supporting surface 11a should be large enough, however, to keep holding plate 15 in a completely stable position.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Electromechanical Clocks (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
US06/052,461 1976-08-09 1979-06-27 Watch movement Expired - Lifetime US4247926A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH10133/76 1976-08-09
CH1013376A CH609825B (fr) 1976-08-09 1976-08-09 Mouvement de montre dont le bati comprend une plaque de maintien.

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US05817717 Continuation 1977-07-21

Publications (1)

Publication Number Publication Date
US4247926A true US4247926A (en) 1981-01-27

Family

ID=4359714

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/052,461 Expired - Lifetime US4247926A (en) 1976-08-09 1979-06-27 Watch movement

Country Status (3)

Country Link
US (1) US4247926A (fr)
JP (1) JPS5320964A (fr)
CH (1) CH609825B (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4924452A (en) * 1987-09-03 1990-05-08 Eta Sa Fabriques D'ebauches Watch provided with a dial
US20050201210A1 (en) * 2004-03-11 2005-09-15 Eta Sa Manufacture Horlogere Suisse Positioning and locking mechanism of display means in a portable electronic apparatus
USD739288S1 (en) * 2013-04-16 2015-09-22 Swatch Ltd Watch movement
USD748517S1 (en) * 2013-04-16 2016-02-02 Swatch Ltd Watch movement

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58186541U (ja) * 1982-06-05 1983-12-12 日本サ−モスタツト株式会社 温度スイツチ
JPH065663Y2 (ja) * 1987-03-17 1994-02-09 シチズン時計株式会社 日・曜・アラ−ム付電子腕時計のモジユ−ル構造
EP1923754B1 (fr) * 2006-11-14 2009-10-14 ETA SA Manufacture Horlogère Suisse Mouvement d'horlogerie équipé d'un module d'affichage

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE518381C (de) * 1930-01-24 1931-02-14 Kienzle Uhrenfabriken A G Werktraeger fuer Uhren, insbesondere fuer Weckeruhren
US2473291A (en) * 1943-10-12 1949-06-14 Smith & Sons Ltd S Dial mounting
US2491453A (en) * 1945-06-09 1949-12-13 William L Gilbert Clock Corp Soundproof clock
FR1111701A (fr) * 1954-09-23 1956-03-05 Jaz Perfectionnements au montage des pendulettes du type réveille-matin
US3025663A (en) * 1957-03-12 1962-03-20 Gen Time Corp Clock housing
US3318086A (en) * 1965-10-22 1967-05-09 Gen Time Corp Closure for alarm clocks or the like
GB1258887A (fr) * 1969-04-16 1971-12-30
US3996735A (en) * 1975-09-02 1976-12-14 Hughes Aircraft Company Electronic watch construction
CH586923B5 (fr) * 1971-12-22 1977-04-15 Ebauches Bettlach Sa
US4023348A (en) * 1974-08-19 1977-05-17 Eta A.G. Ebauches-Fabrik Positioning arrangement on a frame member and on a part having to be secured thereto

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE518381C (de) * 1930-01-24 1931-02-14 Kienzle Uhrenfabriken A G Werktraeger fuer Uhren, insbesondere fuer Weckeruhren
US2473291A (en) * 1943-10-12 1949-06-14 Smith & Sons Ltd S Dial mounting
US2491453A (en) * 1945-06-09 1949-12-13 William L Gilbert Clock Corp Soundproof clock
FR1111701A (fr) * 1954-09-23 1956-03-05 Jaz Perfectionnements au montage des pendulettes du type réveille-matin
US3025663A (en) * 1957-03-12 1962-03-20 Gen Time Corp Clock housing
US3318086A (en) * 1965-10-22 1967-05-09 Gen Time Corp Closure for alarm clocks or the like
GB1258887A (fr) * 1969-04-16 1971-12-30
CH586923B5 (fr) * 1971-12-22 1977-04-15 Ebauches Bettlach Sa
US4023348A (en) * 1974-08-19 1977-05-17 Eta A.G. Ebauches-Fabrik Positioning arrangement on a frame member and on a part having to be secured thereto
US3996735A (en) * 1975-09-02 1976-12-14 Hughes Aircraft Company Electronic watch construction

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4924452A (en) * 1987-09-03 1990-05-08 Eta Sa Fabriques D'ebauches Watch provided with a dial
US20050201210A1 (en) * 2004-03-11 2005-09-15 Eta Sa Manufacture Horlogere Suisse Positioning and locking mechanism of display means in a portable electronic apparatus
US7313054B2 (en) * 2004-03-11 2007-12-25 Eta Sa Manufacture Horlogère Suisse Positioning and locking mechanism of display means in a portable electronic apparatus
USD739288S1 (en) * 2013-04-16 2015-09-22 Swatch Ltd Watch movement
USD739287S1 (en) * 2013-04-16 2015-09-22 Swatch Ltd Watch movement
USD739286S1 (en) * 2013-04-16 2015-09-22 Swatch Ltd Watch movement
USD748517S1 (en) * 2013-04-16 2016-02-02 Swatch Ltd Watch movement

Also Published As

Publication number Publication date
CH609825GA3 (fr) 1979-03-30
CH609825B (fr)
JPS5320964A (en) 1978-02-25
JPS5753551B2 (fr) 1982-11-13

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